Mechanical Design Engineer - Plant Piping Systems

Location: Los Angeles, CA, United States

Salary: $90,000–$175,000 annually

Company

hirify.global designs, builds, and operates low-cost uranium enrichment services in the United States to support advanced nuclear energy production.

What you will do

• Translate P&IDs and process architecture outputs into detailed mechanical designs for piping and equipment systems.
• Size and select pipes, valves, fittings, supports, and other components based on flow, temperature, and pressure conditions.
• Develop piping routes and layouts that support efficient installation, operation, and maintenance.
• Perform structural, flow, stress, and flexibility analyses to validate mechanical integrity and operating performance.
• Specify materials, wall thicknesses, and support methods while preparing engineering drawings, BOMs, and procurement specifications.
• Collaborate with process, structural, and procurement teams, participate in design reviews and risk assessments, and provide technical support during construction.

Requirements

• Bachelor’s degree in Mechanical Engineering or a related field.
• 3+ years of mechanical design experience in industrial plants, chemical facilities, or similar high-hazard environments.
• Strong knowledge of fluid mechanics, structural analysis, and material selection.
• Proficiency with ASME, ANSI, or equivalent piping design standards and familiarity with pressure vessel codes.
• Experience with CAD tools and the ability to interpret P&IDs and process documentation.
• Ability to work extended hours and weekends as necessary, with strong problem-solving and cross-functional communication skills.

Nice to have

• Experience with nuclear, chemical, petrochemical, or gas processing facilities.
• Familiarity with stress and piping flexibility analysis tools such as Caesar II.
• Knowledge of compressible flow, vacuum systems, and cryogenic piping design.
• Large-scale facility procurement experience, including vendor engagement and long-lead components.

Culture & Benefits

• Mission-driven work focused on making nuclear energy more affordable.
• First-principles engineering culture emphasizing urgency, accountability, and transparency.
• Medical, vision, and dental coverage for eligible full-time hires.
• Access to a 401(k) retirement plan and potential long-term incentives through stock options.